Envelope



(No Model.)

B. G. BUTTON.

ENVELOPE.

No. 444,045. Patented Jan. 6,1891.

Wilgesscs j n amzn QB 0n m: mums Ps rsns cm, mo'ro-umm, vnaumeron, o. c.

UNITED STATES PATENT OFFICE.

BENJAMIN G. BUTTON, OF WATERLOO, IOWA.

ENVELOPE.

SPECIFICATION forming part of Letters Patent No. 444,045, dated January 6, 1891.

Application filedJnly 7, 1890. Serial No. 357,942. (No model.)

To all whom it may concern:

Be it known that I, BENJAMIN G. BUTTON, a citizen of the United States, residing at Waterloo, in the county of Black Hawk and State of Iowa, have invented a new and useful Envelope, of which the following is a specification.

This invention relates to envelopes, and the object of the same is to effect improvements therein.

To this end the invention consists in an envelope, hereinafter more fully described, and as illustrated in the drawings, in which- Figure l is a plan view of the blank from which this envelope is constructed. Fig. 2 is a similar plan showing the back and one end folded in. Fig. 3 is a similar plan showing the other end and the flap folded in; and Fig. 4 is a similar plan showing the supplemental flap as folded down and held by the fastener. Fig. 5 is a plan View, similar to Fig. 2, of an envelope of slightly different construction. Fig. 6 is a plan view of this envelope in a position similar to that shown in Fig.

Referring to the said drawings, wherein I have illustrated the several steps taken in the manufacture of my envelope, the letter F designates that portion of the body which forms thefront of the completed envelope and is of rectangular shape, and B is the part which forms the back. In the operation of making the envelope the blank is first folded on the line 1 1, which brings the back up against and over the front, preferably, although not necessarily, leaving small wings I) at the ends of the back. The end pieces E are then folded inwardly on the lines 2 2, as seen in Fig, 2, and if the wings I) are used they are also folded in on this line. The end pieces as they are folded in lap each other at the center of. the back, and through the back and the lapping ends of the end pieces is preferably passed a metallic fastener M. The ordinary flap O is then turned down on the line 3 3, which may or may not turn down wings c of the end pieces, according as they have or have not them formed thereon, and the fastener M is passed through the flap 0.

Each end piece E is of such a width that the ordinary flap 0 will come down thereon only to the line 4 4, below which pointa supplemental flap S is formed, which flap is divided or separated from the body of the end piece by a cut 0, as shown. After the ordi nary flap has been fastened down the supplemental flaps are turned upwardly and also fastened on said fastener, the ends of the latter being bent out, but not pounded close upon the body of the envelope. A seal, as of wax, may then be dropped upon these ends, and will not only embrace them and prevent their becoming detached, but will also serve the ordinary function of a seal.

In the construction shown in Figs. 5 and 6 one end piece E is made to extend entirely across the back, while the other end piece need not be of such length, although it may be. The operation of making an envelope of this kind is substantially the same as that above described, except that two fasteners M are used, one near each end, as shown, and, in fact, additional fasteners may be employed in the other construction to hold down the outer ends of the supplemental flaps S, as shown in dotted lines in Fig. 4.

An envelope constructed in accordance with this invention will be strong and durable and will possess an extra flap S. In envelopes as heretofore made where the ordinary flap 0 was sealed at its ends, it was possible to so bend out the flap that access could be had to the interior of the envelope; but when the supplemental flap is used, which turns upwardly over the outer edge of the ordinary flap and the scaling is done outside of that, it is absolutely impossible to reach under the ordinary flap into the envelope, because the edge of the ordinary flap is covered by the supplemental flap.

What I claim as new, and desire to secure by Letters Patent of the United States, is-

The herein-described envelope, the same comprising a front F, having an upwardlyfolding back, inwardly-folding lapping ends, and a downwardly-folding ordinary flap, the width of the ends being greater than that of said flap, and said ends being provided with cuts 0, extending up to the lower edge of the folded flap, thereby forming a supplemental flap, as and for the purpose set forth.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

BENJAMIN G. BUTTON.

IVitn esses W. H. SNYDER, O. W. MANTOR. 

